I thought about a Dean's micro antenna, but I'm not sure how those connect to the receiver?

And after another glance at his heli (in my truck) I think the esc to motor wires were touching the receiver antenna wire, because when mounting his canopy it pushes the motor/esc wires up against the same left side of the skid support where I ran the antenna wire. I should be able to move the esc motor wire connection to the other side and will test again when it's back to above freezing and winds below 10mph.